Last official estimated population of Otero County was 18,901 (year 2014)[1]. This was 0.006% of total US population and 0.3% of total Colorado state population. Area of Otero County is 1,269.7 mi² (=3288.5 km²), in this year population density was 14.89 p/mi². If population growth rate would be same as in period 2010-2014 (+0.09%/yr), Otero County population in 2026 would be 19,113 [0].
Historical population of Otero County for period 1890-2014 [1] , [2] , [3]:
Estimated population for 2014[1]. Population density is in p./sq.mi [4]. Changes are for period 2010-2015. Value is %/year. Boundary lines are approx. 2012 [5]. Click on flag to hide it.
Population • Density • Changes • Legends • Position
[1890-1900] +10.64 %/yr
[1900-1910] +5.78 %/yr
[1910-1920] +1.14 %/yr
[1920-1930] +0.75 %/yr
[1930-1940] -0.34 %/yr
[1940-1950] +0.7 %/yr
[1950-1960] -0.46 %/yr
[1960-1970] -0.25 %/yr
[1970-1980] -0.41 %/yr
[1980-1990] -1.11 %/yr
[1990-2000] +0.06 %/yr
[2000-2005] -1.07 %/yr
[2005-2010] -0.44 %/yr
[2010-2014] +0.09 %/yr
Looking for settlements in Otero County? Visit this page: Settlements in Otero County, CO
Population of Otero County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 606 | 592 | 1,198 |
| 5 to 9 | 638 | 612 | 1,250 |
| 10 to 14 | 700 | 601 | 1,301 |
| 15 to 19 | 719 | 572 | 1,291 |
| 20 to 24 | 622 | 548 | 1,170 |
| 25 to 29 | 472 | 503 | 975 |
| 30 to 34 | 500 | 547 | 1,047 |
| 35 to 39 | 482 | 506 | 988 |
| 40 to 44 | 475 | 507 | 982 |
| 45 to 49 | 477 | 506 | 983 |
| 50 to 54 | 612 | 656 | 1,268 |
| 55 to 59 | 636 | 636 | 1,272 |
| 60 to 64 | 620 | 628 | 1,248 |
| 65 to 69 | 506 | 511 | 1,017 |
| 70 to 74 | 395 | 438 | 833 |
| 75 to 79 | 317 | 366 | 683 |
| 80 to 84 | 237 | 298 | 535 |
| 85+ | 155 | 292 | 447 |
Otero County resident population estimates by Sex, Race, and Hispanic Origin[1b]. For full list of abbrevations see: population.us/about page.
| Race | Male | Female | Total |
| WAC | 8596 | 8778 | 17,374 |
| WA | 8352 | 8547 | 16,899 |
| NH | 5371 | 5532 | 10,903 |
| NHWAC | 5137 | 5337 | 10,474 |
| NHWA | 5022 | 5226 | 10,248 |
| H | 3798 | 3787 | 7,585 |
| HWAC | 3459 | 3441 | 6,900 |
| HWA | 3330 | 3321 | 6,651 |
| IAC | 506 | 491 | 997 |
| HIAC | 375 | 365 | 740 |
| IA | 330 | 328 | 658 |
| HIA | 266 | 264 | 530 |
| TOM | 254 | 243 | 497 |
| BAC | 195 | 136 | 331 |
| HTOM | 136 | 128 | 264 |
| NHIAC | 131 | 126 | 257 |
| AAC | 114 | 133 | 247 |
| NHTOM | 118 | 115 | 233 |
| BA | 137 | 91 | 228 |
| NHBAC | 126 | 69 | 195 |
| NHAAC | 92 | 100 | 192 |
| AA | 85 | 90 | 175 |
| NHAA | 76 | 72 | 148 |
| NHBA | 88 | 48 | 136 |
| HBAC | 69 | 67 | 136 |
| NHIA | 64 | 64 | 128 |
| HBA | 49 | 43 | 92 |
| NAC | 23 | 35 | 58 |
| HAAC | 22 | 33 | 55 |
| NA | 11 | 20 | 31 |
| HNAC | 13 | 17 | 30 |
| NHNAC | 10 | 18 | 28 |
| HAA | 9 | 18 | 27 |
| HNA | 8 | 13 | 21 |
| NHNA | 3 | 7 | 10 |
• El Paso County population
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46.3 mi, 
295°
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42.9 mi, 
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• Prowers County
72.6 mi, 
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• Bent County
35.2 mi, 
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77.5 mi, 
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• Baca County
76.1 mi, 
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• Kiowa County
62.9 mi, 
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[0] Calculated by population.us from last known population growth rate, not official data.
[1] County population - 2014, archived from the original, retrieved 02/23/2016
[1b] Annual County Resident Population Estimates by Age, Sex, Race, and Hispanic Origin, (used only data for 2014) archived from the original, retrieved 02/23/2016
[2] County population - 2000-2010, archived from the original, retrieved 02/23/2016
[3] Population of States and Counties of the United States: 1790 to 1992, PDF, 15 Mb, census.gov, retrieved 02/23/2016
[4] County area, latitude longitude data, retrieved 02/23/2016
[5] County boundaries, CSV files on boundaries.us, retrived 03/18/2016
*Bent Colorado Notes
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